Synthesis of 3,5-Disubstituted 1,2,4-Oxadiazoles from Amidoximes and Aldehydes in the Superbasic System NaOH/DMSO
摘要:
A new procedure has been proposed for the synthesis of 3,5-disubstituted 1,2,4-oxadiazoles by reaction of amidoximes with aldehydes in the superbasic system NaOH/DMSO at room temperature. The scope of the proposed procedure has been demonstrated by 15 syntheses from various amidoximes and aromatic aldehydes with 27-76% yields. The procedure is inapplicable to aliphatic aldehydes.
DOI:
10.1134/s107042802007009x
作为产物:
描述:
糠醛 、 苯甲酰胺肟 在
哌啶 SiO2 、 ethyl acetate heptane 作用下,
以
甲苯 为溶剂,
反应 18.0h,
以the 5-(furan-2-yl)-3-phenyl-4,5-dihydro-1,2,4-oxadiazole product (745 mg, 3.5 mmol) was obtained as a brown oil that的产率得到5-(furan-2-yl)-3-phenyl-4,5-dihydro-1,2,4-oxadiazole
参考文献:
名称:
3,5-disubstituted-4,5-dihydro-1,2,4-oxadiazoles and compositions and methods for controlling nematode pests
3,5-DISUBSTITUTED-4,5-DIHYDRO-1,2,4-OXADIAZOLES AND COMPOSITIONS AND METHODS FOR CONTROLLING NEMATODE PESTS
申请人:Monsanto Technology LLC
公开号:US20140235439A1
公开(公告)日:2014-08-21
Provided herein are new 3,5-disubstituted-4,5-dihydro-1,2,4-oxadiazoles that exhibit nematicidal activity and are useful, for example, in compositions and methods for the control of unwanted nematodes.
3,5-disubstituted-4,5-dihydro-1,2,4-oxadiazoles and compositions and methods for controlling nematode pests
申请人:Monsanto Technology LLC
公开号:US09232800B2
公开(公告)日:2016-01-12
Provided herein are new 3,5-disubstituted-4,5-dihydro-1,2,4-oxadiazoles that exhibit nematicidal activity and are useful, for example, in compositions and methods for the control of unwanted nematodes.
3,5-DISUBSTITUTED-4,5-DIHYDRO-1,2,4-OXADIAZOLES FOR CONTROLLING NEMATODE PESTS
申请人:Monsanto Technology LLC
公开号:EP2956453A1
公开(公告)日:2015-12-23
US9232800B2
申请人:——
公开号:US9232800B2
公开(公告)日:2016-01-12
[EN] 3,5-DISUBSTITUTED-4,5-DIHYDRO-1,2,4-OXADIAZOLES FOR CONTROLLING NEMATODE PESTS<br/>[FR] 4,5-DIHYDRO-1,2,4-OXADIAZOLES 3,5-DISUBSTITUÉS POUR LA LUTTE CONTRE LES ORGANISMES NUISIBLES DE NÉMATODE
申请人:MONSANTO TECHNOLOGY LLC
公开号:WO2014127195A1
公开(公告)日:2014-08-21
Provided herein are new 3,5-disubstituted-4,5-dihydro-1,2,4-oxadiazoles that exhibit nematicidal activity and are useful, for example, in compositions and methods for the control of unwanted nematodes.